Patient leaflet - Cyclogest 400 mg pessary
1. What Cyclogest is and what it is used for
Cyclogest contains micronised progesterone, which is a natural, female sex hormone, produced in the body.
Cyclogest works by adjusting the hormonal balance within the body for the treatment of:
pre-menstrual syndrome which often affects women during the 7
to 10 days before their monthly period. The symptoms of pre-menstrual syndrome include feelings of tension, irritability, depression, headache, breast tenderness, weight gain and bloatedness
post-natal depression which some women get after their baby
has been born.
women who need extra progesterone while undergoing
treatment in an Assisted Reproductive Technology (ART) programme.
2. What you need to know before you use Cyclogest
Do not use Cyclogest if you:
are allergic to progesterone or any of the other ingredients of
this medicine (listed in section 6),
have unusual vaginal bleeding that has not been evaluated by
the doctor,
have known or suspected tumour that is hormone sensitive, • have porphyria disorders (a group of inherited or acquired
disorders of certain enzymes),
have or have had blood clots in the legs, lungs, eyes or
elsewhere in the body,
currently have or have had severe liver problems. • have a miscarriage and your physician suspects some tissue is
still in the uterus or pregnancy outside of the womb.
Warnings and precautions
Talk to your doctor, pharmacist or nurse before using Cyclogest. Take special care and tell your doctor straight away if you experience any of these symptoms during treatment or even few days after the last dosage:
pains in the calves or chest, a sudden shortness of breath or
coughing blood indicating possible clots in the legs, heart, or lungs
severe headache or vomiting, dizziness, faintness, or changes in
vision or speech, weakness or numbness of an arm or leg indicating possible clots in the brain or eye
- worsening of depression
Check with your doctor or pharmacist before using Cyclogest if you have or ever have had:
liver problems such as jaundice (yellowing of the skin and whites
of the eyes).
- epilepsy
- migraine
- asthma
- cardiac or renal dysfunction
diabetes
Children
There is no relevant use of Cyclogest in children.
Other medicines and Cyclogest
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This is especially important in case you are taking carbamazepine (e.g. to prevent fits, treat certain type of pain or mood disorders), rifampicin (to treat infections) or phenytoin (e.g. to prevent fits or treat certain type of pain) as they may decrease the effectiveness of progesterone.
Using other vaginal products at the same time as Cyclogest is used vaginally is not recommended as it is not known if it affects the treatment.
Pregnancy and breast-feeding
Cyclogest can be used during the first trimester of pregnancy for women who need extra progesterone while undergoing treatment in an Assisted Reproductive Technology (ART) programme.
The risks of congenital (conditions present at birth) anomalies, including genital abnormalities in male or female infants, from exposure to exogenous progesterone during pregnancy have not been fully established.
For other use, if you are pregnant, think you may be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before using this medicine.
This medicine should not be used during breast feeding.
3. How to use Cyclogest
Always use this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.
For women undergoing Assisted Reproductive Technology (ART) programme: The recommended dose is 400 mg twice a day by vaginal insertion. Start using Cyclogest 400 mg on the day of egg retrieval. The administration of Cyclogest should be continued for 38 days if pregnancy has been confirmed.
For the treatment of premenstrual syndrome and post-natal depression:
The recommended dose is 200 mg once a day or 400 mg twice a day by vaginal or rectal insertion. The pessary may be inserted into either the vagina or rectum (back passage) depending upon the following certain other conditions.
You should insert Cyclogest into the:
vagina if you have:
colitis (inflammation of the colon causing frequent attacks of
diarrhoea with mucous or blood)
problems controlling your bowel movements (faecal
incontinence).
rectum (back passage) if you have:
- a vaginal infection (discharge from your vagina) – or often have cystitis (a burning pain on passing water) – recently given birth
to use a barrier method of birth control such as a
diaphragm, cap or condom. Such devices may not work properly in the presence of the hard fat from the pessary.
For premenstrual tension start using Cyclogest on day 12 or 14 of your menstrual cycle. This can be planned and marked onto your calendar; day 1 is the first day of your monthly period, counting forward to day 12 or 14 as advised by your doctor.
Do not swallow Cyclogest.
How to insert Cyclogest
Always wash your hands before and after inserting the pessary.
To insert into the:
Vagina - place the pessary between the lips of the vagina and
push the pessary upwards and backwards. You may find it easier to do this if you are lying down or squatting. • Rectum (back passage) - gently push the pessary into the
rectum for about one inch. Your muscles will hold the pessary in place when it is in far enough. Squeeze your buttocks together for a few seconds.
If you use more Cyclogest than you should
If you (or someone else) has accidentally swallowed any of the pessaries or you use too many, contact your nearest hospital casualty department or your doctor immediately for advice.
If you forget to use Cyclogest
If you forget to insert a pessary, do so as soon as you remember, unless it is nearly time for the next dose. Never use two doses together. Remember to use the remaining doses at the correct time.
If you stop using Cyclogest
Please consult your doctor or pharmacist for advice if you intend to stop or have stopped using Cyclogest. Abrupt discontinuation of progesterone dosing may cause increased anxiety, moodiness, and increased sensibility to seizures.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
4. Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Stop using Cyclogest and contact your doctor at once if you have an allergic reaction. Signs may include a skin rash, which may be itchy.
Common (may affect up to 1 in 10 people)
Drowsiness, stomach discomfort or pain, breast pain
Not known (frequency cannot be estimated from the available data) Diarrhoea, soreness in your rectum (back passage), flatulence (wind), changes in your menstrual cycle (you may find that your monthly period will start earlier than usual or it may be delayed), leakage after the pessary has dissolved (this is quite normal when using medicines that are inserted into the vagina or rectum)
Adverse reactions in patients undergoing ART treatment is presented below:
Common side effects (may affect up to 1 in 10 people):
Abdominal distension (swelling in the abdomen), abdominal
pain, constipation
- Sleepiness
- Tiredness
- Hot flush
- Breast pain
Uncommon side effects (may affect up to 1 in 100 people):
- Headache, dizziness, mood changes
Change in taste, vomiting, flatulence (wind), diarrhoea, bloat
(gastric dilatation)
- Night sweats, skin rash or itching
- Joint pain
- Pelvic pain, ovarian enlargement, vaginal bleeding
- Frequent urination, involuntary excretion of urine
- Weight increase
- Bleeding
Itching at the application site, feeling cold or body
temperature change or general discomfort
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.
By reporting side effects you can help provide more information on the safety of this medicine.
5. How to store Cyclogest
- KEEP OUT OF THE SIGHT AND REACH OF CHILDREN
- Do not store above 30°C.
Do not use this medicine after the expiry date which is stated on
the carton. The expiry date refers to the last day of that month.
If you notice any signs of your medicine deteriorating, consult
your pharmacist.
Do not throw away any medicines via wastewater or household
waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.
6. Contents of the pack and other information
What Cyclogest contains
- The active substance (the ingredient that makes the medicine work) is micronised progesterone. Each pessary contains 400 mg of the active Ingredient.
- The other ingredients are hard fat.
What Cyclogest looks like and contents of the pack
Cyclogest are off-white, torpedo-shaped pessaries. Available in a pack size of 15.
Manufacturer
Manufactured by Gedeon Richter Plc., Gyömrői út 19-21 1103 Budapest, Hungary.
Or
Fulton Medicinali S.p.A, Via Marconi, 28/9, 20044-Arese (MI) Italy. Procured from within the EU and repackaged by the Product Licence holder: G-Pharma Ltd., Unit 1-4 Dakota Avenue, Salford M50 2PU.
POM
PL 16369/2304
Date of revision of this leaflet: 23/12/2025
Cyclogest® is a registered Trademark of L. D. Collins & Co. Limited
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- 7. Further information:
Premenstrual Syndrome
Many women suffer from a condition called premenstrual syndrome or PMS. This is commonly known as PMT (premenstrual tension) because of the anxiety and bad temper often associated with it. However, there are many other symptoms that occur with PMS including depression, bloating and breast tenderness. It is not just your symptoms that decide whether you have PMS but the time at which they are at their worst.
PMS is characterised by the symptoms that occur during the days leading up to your period and are then completely relieved by menstruation. The cause of PMS is not completely understood but it is believed to be related to the hormonal changes that occur during the monthly cycle. Many women obtain relief from their symptoms when their hormonal balance is altered with a medicine prescribed by their doctor.
Further information about PMS can be obtained from: National Association for Premenstrual Syndrome
41 Old Road
East Peckham
Kent
TN12 5AP
Post-Natal Depression
Many mothers experience short-term periods of mild depression following the birth of their baby. This is a common condition, usually occurring three or four days after delivery, affecting at least half of all new mothers who may feel tearful, overwhelmed and irritable during this time. Support, reassurance and rest can help these feelings to pass within a few days.
However, if the anxiety does not improve, the mother may be developing postnatal depression. Up to 15 per cent of new mothers develop more severe symptoms within 12 months of their child’s birth. Postnatal depression (PND) is characterised by marked low mood for a more prolonged period of time.
Though it may take several weeks or months until a full recovery is reached, PND is a treatable condition from which the mother will get better.
Speak to your midwife, health visitor or doctor if you have any further questions.